Dear Jack,
Are centrifugal wheel blast machines available for internal blast cleaning of pipes ( 30" to 50" dia ). Capacities of rotating nozzle air powered blasting are quite low.

Dear Jack
We manufactured differents centrifugal wheel blast machines por internal pipes since 23" to more than 130" diameter

The last one we manufactured has 2 x 50 Hp wheels - production: pipes 24" x 40´ long - 10 pipes / hour

If you need more information or pictures please send me an email
David Cowes
[email protected]
David